Home / 863,138,567.20-1,293,857,545.20-426,506,641.60

Finding the Fourth Proportional to 863,138,567.20, 1,293,857,545.20 and 426,506,641.60

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Solution

The fourth proportional to 863,138,567.20, 1,293,857,545.20 and 426,506,641.60 is: 639,339,796.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    863,138,567.20 : 1,293,857,545.20 = 426,506,641.60 : x
  2. Step 2: Convert to fraction form
    863,138,567.20/1,293,857,545.20 = 426,506,641.60/x
  3. Step 3: Cross multiply
    863,138,567.20x = 1,293,857,545.20 × 426,506,641.60
  4. Step 4: Simplify right side
    863,138,567.20x = 551,838,836,312,072,256
  5. Step 5: Solve for x
    x = 551,838,836,312,072,256/863,138,567.20
  6. Step 6: Final answer
    x = 639,339,796.97

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1.5x scale

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.