Home / 778,721.40-1,166,238.90-528,046.20

Finding the Fourth Proportional to 778,721.40, 1,166,238.90 and 528,046.20

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Solution

The fourth proportional to 778,721.40, 1,166,238.90 and 528,046.20 is: 790,819.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,721.40 : 1,166,238.90 = 528,046.20 : x
  2. Step 2: Convert to fraction form
    778,721.40/1,166,238.90 = 528,046.20/x
  3. Step 3: Cross multiply
    778,721.40x = 1,166,238.90 × 528,046.20
  4. Step 4: Simplify right side
    778,721.40x = 615,828,019,437.18
  5. Step 5: Solve for x
    x = 615,828,019,437.18/778,721.40
  6. Step 6: Final answer
    x = 790,819.44

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1.5x scale

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.