Home / 426,470,545.75-639,705,818.63-103,354,417.75

Finding the Fourth Proportional to 426,470,545.75, 639,705,818.63 and 103,354,417.75

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Solution

The fourth proportional to 426,470,545.75, 639,705,818.63 and 103,354,417.75 is: 155,031,626.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,470,545.75 : 639,705,818.63 = 103,354,417.75 : x
  2. Step 2: Convert to fraction form
    426,470,545.75/639,705,818.63 = 103,354,417.75/x
  3. Step 3: Cross multiply
    426,470,545.75x = 639,705,818.63 × 103,354,417.75
  4. Step 4: Simplify right side
    426,470,545.75x = 66,116,422,415,790,752
  5. Step 5: Solve for x
    x = 66,116,422,415,790,752/426,470,545.75
  6. Step 6: Final answer
    x = 155,031,626.63

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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.