Home / 289,656,545.40-434,484,818.10-85,205,287.80

Finding the Fourth Proportional to 289,656,545.40, 434,484,818.10 and 85,205,287.80

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Solution

The fourth proportional to 289,656,545.40, 434,484,818.10 and 85,205,287.80 is: 127,807,931.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,656,545.40 : 434,484,818.10 = 85,205,287.80 : x
  2. Step 2: Convert to fraction form
    289,656,545.40/434,484,818.10 = 85,205,287.80/x
  3. Step 3: Cross multiply
    289,656,545.40x = 434,484,818.10 × 85,205,287.80
  4. Step 4: Simplify right side
    289,656,545.40x = 37,020,403,970,941,152
  5. Step 5: Solve for x
    x = 37,020,403,970,941,152/289,656,545.40
  6. Step 6: Final answer
    x = 127,807,931.70

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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.