Home / 785,248,081.10-1,177,872,121.65-664,315,729.10

Finding the Fourth Proportional to 785,248,081.10, 1,177,872,121.65 and 664,315,729.10

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Solution

The fourth proportional to 785,248,081.10, 1,177,872,121.65 and 664,315,729.10 is: 996,473,593.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    785,248,081.10 : 1,177,872,121.65 = 664,315,729.10 : x
  2. Step 2: Convert to fraction form
    785,248,081.10/1,177,872,121.65 = 664,315,729.10/x
  3. Step 3: Cross multiply
    785,248,081.10x = 1,177,872,121.65 × 664,315,729.10
  4. Step 4: Simplify right side
    785,248,081.10x = 782,478,977,280,483,712
  5. Step 5: Solve for x
    x = 782,478,977,280,483,712/785,248,081.10
  6. Step 6: Final answer
    x = 996,473,593.65

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Double scale
Find fourth proportional to 785,248,082.10, 1,177,872,123.15 and 664,315,730.10
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.