Home / 487,802,013.48-672,236,468.46-478,836,013.32

Finding the Fourth Proportional to 487,802,013.48, 672,236,468.46 and 478,836,013.32

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Solution

The fourth proportional to 487,802,013.48, 672,236,468.46 and 478,836,013.32 is: 659,880,487.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,802,013.48 : 672,236,468.46 = 478,836,013.32 : x
  2. Step 2: Convert to fraction form
    487,802,013.48/672,236,468.46 = 478,836,013.32/x
  3. Step 3: Cross multiply
    487,802,013.48x = 672,236,468.46 × 478,836,013.32
  4. Step 4: Simplify right side
    487,802,013.48x = 321,891,030,565,702,336
  5. Step 5: Solve for x
    x = 321,891,030,565,702,336/487,802,013.48
  6. Step 6: Final answer
    x = 659,880,487.72

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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.