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Finding the Fourth Proportional to 752,970,394.40, 1,039,124,376 and 418,457,013.57

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Solution

The fourth proportional to 752,970,394.40, 1,039,124,376 and 418,457,013.57 is: 577,484,701.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    752,970,394.40 : 1,039,124,376 = 418,457,013.57 : x
  2. Step 2: Convert to fraction form
    752,970,394.40/1,039,124,376 = 418,457,013.57/x
  3. Step 3: Cross multiply
    752,970,394.40x = 1,039,124,376 × 418,457,013.57
  4. Step 4: Simplify right side
    752,970,394.40x = 434,828,883,108,749,760
  5. Step 5: Solve for x
    x = 434,828,883,108,749,760/752,970,394.40
  6. Step 6: Final answer
    x = 577,484,701.05

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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.