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Finding the Fourth Proportional to 717,668.29, 989,019.51 and 513,364.38

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Solution

The fourth proportional to 717,668.29, 989,019.51 and 513,364.38 is: 707,468.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,668.29 : 989,019.51 = 513,364.38 : x
  2. Step 2: Convert to fraction form
    717,668.29/989,019.51 = 513,364.38/x
  3. Step 3: Cross multiply
    717,668.29x = 989,019.51 × 513,364.38
  4. Step 4: Simplify right side
    717,668.29x = 507,727,387,559.05
  5. Step 5: Solve for x
    x = 507,727,387,559.05/717,668.29
  6. Step 6: Final answer
    x = 707,468.05

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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.