Home / 931,510.90-1,397,266.35-660,906.10

Finding the Fourth Proportional to 931,510.90, 1,397,266.35 and 660,906.10

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Solution

The fourth proportional to 931,510.90, 1,397,266.35 and 660,906.10 is: 991,359.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    931,510.90 : 1,397,266.35 = 660,906.10 : x
  2. Step 2: Convert to fraction form
    931,510.90/1,397,266.35 = 660,906.10/x
  3. Step 3: Cross multiply
    931,510.90x = 1,397,266.35 × 660,906.10
  4. Step 4: Simplify right side
    931,510.90x = 923,461,854,039.74
  5. Step 5: Solve for x
    x = 923,461,854,039.74/931,510.90
  6. Step 6: Final answer
    x = 991,359.15

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Double scale
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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.