Home / 1,070,476.81-1,605,780.08-430,778.10

Finding the Fourth Proportional to 1,070,476.81, 1,605,780.08 and 430,778.10

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Solution

The fourth proportional to 1,070,476.81, 1,605,780.08 and 430,778.10 is: 646,193.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,070,476.81 : 1,605,780.08 = 430,778.10 : x
  2. Step 2: Convert to fraction form
    1,070,476.81/1,605,780.08 = 430,778.10/x
  3. Step 3: Cross multiply
    1,070,476.81x = 1,605,780.08 × 430,778.10
  4. Step 4: Simplify right side
    1,070,476.81x = 691,734,891,880.25
  5. Step 5: Solve for x
    x = 691,734,891,880.25/1,070,476.81
  6. Step 6: Final answer
    x = 646,193.25

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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.