Home / 476,928,002.20-715,392,003.30-390,763,701.40

Finding the Fourth Proportional to 476,928,002.20, 715,392,003.30 and 390,763,701.40

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Solution

The fourth proportional to 476,928,002.20, 715,392,003.30 and 390,763,701.40 is: 586,145,552.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    476,928,002.20 : 715,392,003.30 = 390,763,701.40 : x
  2. Step 2: Convert to fraction form
    476,928,002.20/715,392,003.30 = 390,763,701.40/x
  3. Step 3: Cross multiply
    476,928,002.20x = 715,392,003.30 × 390,763,701.40
  4. Step 4: Simplify right side
    476,928,002.20x = 279,549,227,161,468,992
  5. Step 5: Solve for x
    x = 279,549,227,161,468,992/476,928,002.20
  6. Step 6: Final answer
    x = 586,145,552.10

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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.