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Finding the Fourth Proportional to 503,972,345.70, 695,484,809.66 and 292,405,150.20

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Solution

The fourth proportional to 503,972,345.70, 695,484,809.66 and 292,405,150.20 is: 403,520,831.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    503,972,345.70 : 695,484,809.66 = 292,405,150.20 : x
  2. Step 2: Convert to fraction form
    503,972,345.70/695,484,809.66 = 292,405,150.20/x
  3. Step 3: Cross multiply
    503,972,345.70x = 695,484,809.66 × 292,405,150.20
  4. Step 4: Simplify right side
    503,972,345.70x = 203,363,340,230,450,688
  5. Step 5: Solve for x
    x = 203,363,340,230,450,688/503,972,345.70
  6. Step 6: Final answer
    x = 403,520,831.98

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.