Home / 772,061.40-1,159,128.90-492,816.60

Finding the Fourth Proportional to 772,061.40, 1,159,128.90 and 492,816.60

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Solution

The fourth proportional to 772,061.40, 1,159,128.90 and 492,816.60 is: 739,886.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    772,061.40 : 1,159,128.90 = 492,816.60 : x
  2. Step 2: Convert to fraction form
    772,061.40/1,159,128.90 = 492,816.60/x
  3. Step 3: Cross multiply
    772,061.40x = 1,159,128.90 × 492,816.60
  4. Step 4: Simplify right side
    772,061.40x = 571,237,963,459.74
  5. Step 5: Solve for x
    x = 571,237,963,459.74/772,061.40
  6. Step 6: Final answer
    x = 739,886.70

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Double scale
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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.