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Finding the Fourth Proportional to 717,802.85, 989,902.38 and 523,903.64

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Solution

The fourth proportional to 717,802.85, 989,902.38 and 523,903.64 is: 722,501.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,802.85 : 989,902.38 = 523,903.64 : x
  2. Step 2: Convert to fraction form
    717,802.85/989,902.38 = 523,903.64/x
  3. Step 3: Cross multiply
    717,802.85x = 989,902.38 × 523,903.64
  4. Step 4: Simplify right side
    717,802.85x = 518,613,460,126.66
  5. Step 5: Solve for x
    x = 518,613,460,126.66/717,802.85
  6. Step 6: Final answer
    x = 722,501.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.