Home / 647,536,007.20-971,304,010.80-440,911,746.40

Finding the Fourth Proportional to 647,536,007.20, 971,304,010.80 and 440,911,746.40

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Solution

The fourth proportional to 647,536,007.20, 971,304,010.80 and 440,911,746.40 is: 661,367,619.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,536,007.20 : 971,304,010.80 = 440,911,746.40 : x
  2. Step 2: Convert to fraction form
    647,536,007.20/971,304,010.80 = 440,911,746.40/x
  3. Step 3: Cross multiply
    647,536,007.20x = 971,304,010.80 × 440,911,746.40
  4. Step 4: Simplify right side
    647,536,007.20x = 428,259,347,687,152,448
  5. Step 5: Solve for x
    x = 428,259,347,687,152,448/647,536,007.20
  6. Step 6: Final answer
    x = 661,367,619.60

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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.