Home / 420,260,358.60-630,390,537.90-147,631,125.60

Finding the Fourth Proportional to 420,260,358.60, 630,390,537.90 and 147,631,125.60

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Solution

The fourth proportional to 420,260,358.60, 630,390,537.90 and 147,631,125.60 is: 221,446,688.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,260,358.60 : 630,390,537.90 = 147,631,125.60 : x
  2. Step 2: Convert to fraction form
    420,260,358.60/630,390,537.90 = 147,631,125.60/x
  3. Step 3: Cross multiply
    420,260,358.60x = 630,390,537.90 × 147,631,125.60
  4. Step 4: Simplify right side
    420,260,358.60x = 93,065,264,677,766,448
  5. Step 5: Solve for x
    x = 93,065,264,677,766,448/420,260,358.60
  6. Step 6: Final answer
    x = 221,446,688.40

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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.