Home / 778,540.95-1,074,385.02-434,356.40

Finding the Fourth Proportional to 778,540.95, 1,074,385.02 and 434,356.40

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Solution

The fourth proportional to 778,540.95, 1,074,385.02 and 434,356.40 is: 599,411.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,540.95 : 1,074,385.02 = 434,356.40 : x
  2. Step 2: Convert to fraction form
    778,540.95/1,074,385.02 = 434,356.40/x
  3. Step 3: Cross multiply
    778,540.95x = 1,074,385.02 × 434,356.40
  4. Step 4: Simplify right side
    778,540.95x = 466,666,006,631.29
  5. Step 5: Solve for x
    x = 466,666,006,631.29/778,540.95
  6. Step 6: Final answer
    x = 599,411.00

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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.