Home / 420,552,006.20-630,828,009.30-239,153,478.20

Finding the Fourth Proportional to 420,552,006.20, 630,828,009.30 and 239,153,478.20

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Solution

The fourth proportional to 420,552,006.20, 630,828,009.30 and 239,153,478.20 is: 358,730,217.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,552,006.20 : 630,828,009.30 = 239,153,478.20 : x
  2. Step 2: Convert to fraction form
    420,552,006.20/630,828,009.30 = 239,153,478.20/x
  3. Step 3: Cross multiply
    420,552,006.20x = 630,828,009.30 × 239,153,478.20
  4. Step 4: Simplify right side
    420,552,006.20x = 150,864,712,570,076,928
  5. Step 5: Solve for x
    x = 150,864,712,570,076,928/420,552,006.20
  6. Step 6: Final answer
    x = 358,730,217.30

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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.