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Finding the Fourth Proportional to 769,559,407.95, 1,061,963,531.67 and 417,127,831.86

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Solution

The fourth proportional to 769,559,407.95, 1,061,963,531.67 and 417,127,831.86 is: 575,620,986.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    769,559,407.95 : 1,061,963,531.67 = 417,127,831.86 : x
  2. Step 2: Convert to fraction form
    769,559,407.95/1,061,963,531.67 = 417,127,831.86/x
  3. Step 3: Cross multiply
    769,559,407.95x = 1,061,963,531.67 × 417,127,831.86
  4. Step 4: Simplify right side
    769,559,407.95x = 442,974,545,479,895,552
  5. Step 5: Solve for x
    x = 442,974,545,479,895,552/769,559,407.95
  6. Step 6: Final answer
    x = 575,620,986.38

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1.5x scale

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.