Home / 1,238,220.54-1,708,020.39-778,607.70

Finding the Fourth Proportional to 1,238,220.54, 1,708,020.39 and 778,607.70

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Solution

The fourth proportional to 1,238,220.54, 1,708,020.39 and 778,607.70 is: 1,074,023.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,238,220.54 : 1,708,020.39 = 778,607.70 : x
  2. Step 2: Convert to fraction form
    1,238,220.54/1,708,020.39 = 778,607.70/x
  3. Step 3: Cross multiply
    1,238,220.54x = 1,708,020.39 × 778,607.70
  4. Step 4: Simplify right side
    1,238,220.54x = 1,329,877,827,411.00
  5. Step 5: Solve for x
    x = 1,329,877,827,411.00/1,238,220.54
  6. Step 6: Final answer
    x = 1,074,023.39

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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.