Home / 442,870,892.70-664,495,295.85-212,721,510.30

Finding the Fourth Proportional to 442,870,892.70, 664,495,295.85 and 212,721,510.30

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Solution

The fourth proportional to 442,870,892.70, 664,495,295.85 and 212,721,510.30 is: 319,173,025.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,870,892.70 : 664,495,295.85 = 212,721,510.30 : x
  2. Step 2: Convert to fraction form
    442,870,892.70/664,495,295.85 = 212,721,510.30/x
  3. Step 3: Cross multiply
    442,870,892.70x = 664,495,295.85 × 212,721,510.30
  4. Step 4: Simplify right side
    442,870,892.70x = 141,352,442,920,457,328
  5. Step 5: Solve for x
    x = 141,352,442,920,457,328/442,870,892.70
  6. Step 6: Final answer
    x = 319,173,025.93

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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.