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Finding the Fourth Proportional to 717,068.64, 989,860.80 and 510,470.40

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Solution

The fourth proportional to 717,068.64, 989,860.80 and 510,470.40 is: 704,667.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,068.64 : 989,860.80 = 510,470.40 : x
  2. Step 2: Convert to fraction form
    717,068.64/989,860.80 = 510,470.40/x
  3. Step 3: Cross multiply
    717,068.64x = 989,860.80 × 510,470.40
  4. Step 4: Simplify right side
    717,068.64x = 505,294,638,520.32
  5. Step 5: Solve for x
    x = 505,294,638,520.32/717,068.64
  6. Step 6: Final answer
    x = 704,667.04

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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.