Home / 1,580,386,390.31-2,369,803,868.59-781,780,821.35

Finding the Fourth Proportional to 1,580,386,390.31, 2,369,803,868.59 and 781,780,821.35

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Solution

The fourth proportional to 1,580,386,390.31, 2,369,803,868.59 and 781,780,821.35 is: 1,172,287,502.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,580,386,390.31 : 2,369,803,868.59 = 781,780,821.35 : x
  2. Step 2: Convert to fraction form
    1,580,386,390.31/2,369,803,868.59 = 781,780,821.35/x
  3. Step 3: Cross multiply
    1,580,386,390.31x = 2,369,803,868.59 × 781,780,821.35
  4. Step 4: Simplify right side
    1,580,386,390.31x = 1,852,667,214,822,673,408
  5. Step 5: Solve for x
    x = 1,852,667,214,822,673,408/1,580,386,390.31
  6. Step 6: Final answer
    x = 1,172,287,502.72

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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.