Home / 1,238,228.79-1,708,031.77-778,615.95

Finding the Fourth Proportional to 1,238,228.79, 1,708,031.77 and 778,615.95

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Solution

The fourth proportional to 1,238,228.79, 1,708,031.77 and 778,615.95 is: 1,074,034.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,238,228.79 : 1,708,031.77 = 778,615.95 : x
  2. Step 2: Convert to fraction form
    1,238,228.79/1,708,031.77 = 778,615.95/x
  3. Step 3: Cross multiply
    1,238,228.79x = 1,708,031.77 × 778,615.95
  4. Step 4: Simplify right side
    1,238,228.79x = 1,329,900,779,228.73
  5. Step 5: Solve for x
    x = 1,329,900,779,228.73/1,238,228.79
  6. Step 6: Final answer
    x = 1,074,034.77

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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.