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Finding the Fourth Proportional to 490,710,490.80, 735,440,545.80 and 260,789,722.80

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Solution

The fourth proportional to 490,710,490.80, 735,440,545.80 and 260,789,722.80 is: 390,852,324.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,710,490.80 : 735,440,545.80 = 260,789,722.80 : x
  2. Step 2: Convert to fraction form
    490,710,490.80/735,440,545.80 = 260,789,722.80/x
  3. Step 3: Cross multiply
    490,710,490.80x = 735,440,545.80 × 260,789,722.80
  4. Step 4: Simplify right side
    490,710,490.80x = 191,795,336,075,062,688
  5. Step 5: Solve for x
    x = 191,795,336,075,062,688/490,710,490.80
  6. Step 6: Final answer
    x = 390,852,324.68

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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.