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Finding the Fourth Proportional to 555,764.72, 766,985.16 and 314,057.48

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Solution

The fourth proportional to 555,764.72, 766,985.16 and 314,057.48 is: 433,416.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,764.72 : 766,985.16 = 314,057.48 : x
  2. Step 2: Convert to fraction form
    555,764.72/766,985.16 = 314,057.48/x
  3. Step 3: Cross multiply
    555,764.72x = 766,985.16 × 314,057.48
  4. Step 4: Simplify right side
    555,764.72x = 240,877,426,547.00
  5. Step 5: Solve for x
    x = 240,877,426,547.00/555,764.72
  6. Step 6: Final answer
    x = 433,416.19

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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.