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Finding the Fourth Proportional to 647,485.60, 972,394.80 and 626,490.40

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Solution

The fourth proportional to 647,485.60, 972,394.80 and 626,490.40 is: 940,864.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,485.60 : 972,394.80 = 626,490.40 : x
  2. Step 2: Convert to fraction form
    647,485.60/972,394.80 = 626,490.40/x
  3. Step 3: Cross multiply
    647,485.60x = 972,394.80 × 626,490.40
  4. Step 4: Simplify right side
    647,485.60x = 609,196,007,209.92
  5. Step 5: Solve for x
    x = 609,196,007,209.92/647,485.60
  6. Step 6: Final answer
    x = 940,864.18

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1.5x scale

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.