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Finding the Fourth Proportional to 1,381,050,214.97, 1,905,850,061.30 and 745,970,703.86

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Solution

The fourth proportional to 1,381,050,214.97, 1,905,850,061.30 and 745,970,703.86 is: 1,029,439,984.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,381,050,214.97 : 1,905,850,061.30 = 745,970,703.86 : x
  2. Step 2: Convert to fraction form
    1,381,050,214.97/1,905,850,061.30 = 745,970,703.86/x
  3. Step 3: Cross multiply
    1,381,050,214.97x = 1,905,850,061.30 × 745,970,703.86
  4. Step 4: Simplify right side
    1,381,050,214.97x = 1,421,708,311,686,176,768
  5. Step 5: Solve for x
    x = 1,421,708,311,686,176,768/1,381,050,214.97
  6. Step 6: Final answer
    x = 1,029,439,984.35

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Double scale
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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.