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Finding the Fourth Proportional to 663,693.13, 916,798.06 and 520,309.16

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Solution

The fourth proportional to 663,693.13, 916,798.06 and 520,309.16 is: 718,733.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,693.13 : 916,798.06 = 520,309.16 : x
  2. Step 2: Convert to fraction form
    663,693.13/916,798.06 = 520,309.16/x
  3. Step 3: Cross multiply
    663,693.13x = 916,798.06 × 520,309.16
  4. Step 4: Simplify right side
    663,693.13x = 477,018,428,488.23
  5. Step 5: Solve for x
    x = 477,018,428,488.23/663,693.13
  6. Step 6: Final answer
    x = 718,733.41

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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.