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Finding the Fourth Proportional to 647,820.40, 971,730.60 and 569,088.40

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Solution

The fourth proportional to 647,820.40, 971,730.60 and 569,088.40 is: 853,632.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,820.40 : 971,730.60 = 569,088.40 : x
  2. Step 2: Convert to fraction form
    647,820.40/971,730.60 = 569,088.40/x
  3. Step 3: Cross multiply
    647,820.40x = 971,730.60 × 569,088.40
  4. Step 4: Simplify right side
    647,820.40x = 553,000,612,385.04
  5. Step 5: Solve for x
    x = 553,000,612,385.04/647,820.40
  6. Step 6: Final answer
    x = 853,632.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.