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Finding the Fourth Proportional to 555,798.80, 766,999.08 and 314,159.60

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Solution

The fourth proportional to 555,798.80, 766,999.08 and 314,159.60 is: 433,538.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,798.80 : 766,999.08 = 314,159.60 : x
  2. Step 2: Convert to fraction form
    555,798.80/766,999.08 = 314,159.60/x
  3. Step 3: Cross multiply
    555,798.80x = 766,999.08 × 314,159.60
  4. Step 4: Simplify right side
    555,798.80x = 240,960,124,173.17
  5. Step 5: Solve for x
    x = 240,960,124,173.17/555,798.80
  6. Step 6: Final answer
    x = 433,538.40

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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.