Home / 912,440.40-1,367,105.40-778,693.20

Finding the Fourth Proportional to 912,440.40, 1,367,105.40 and 778,693.20

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Solution

The fourth proportional to 912,440.40, 1,367,105.40 and 778,693.20 is: 1,166,712.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    912,440.40 : 1,367,105.40 = 778,693.20 : x
  2. Step 2: Convert to fraction form
    912,440.40/1,367,105.40 = 778,693.20/x
  3. Step 3: Cross multiply
    912,440.40x = 1,367,105.40 × 778,693.20
  4. Step 4: Simplify right side
    912,440.40x = 1,064,555,678,663.28
  5. Step 5: Solve for x
    x = 1,064,555,678,663.28/912,440.40
  6. Step 6: Final answer
    x = 1,166,712.56

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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.