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Finding the Fourth Proportional to 563,210.40, 843,260.40 and 438,794.40

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Solution

The fourth proportional to 563,210.40, 843,260.40 and 438,794.40 is: 656,979.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    563,210.40 : 843,260.40 = 438,794.40 : x
  2. Step 2: Convert to fraction form
    563,210.40/843,260.40 = 438,794.40/x
  3. Step 3: Cross multiply
    563,210.40x = 843,260.40 × 438,794.40
  4. Step 4: Simplify right side
    563,210.40x = 370,017,941,261.76
  5. Step 5: Solve for x
    x = 370,017,941,261.76/563,210.40
  6. Step 6: Final answer
    x = 656,979.95

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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.