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Finding the Fourth Proportional to 514,563.20, 710,134.88 and 310,664.32

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Solution

The fourth proportional to 514,563.20, 710,134.88 and 310,664.32 is: 428,739.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    514,563.20 : 710,134.88 = 310,664.32 : x
  2. Step 2: Convert to fraction form
    514,563.20/710,134.88 = 310,664.32/x
  3. Step 3: Cross multiply
    514,563.20x = 710,134.88 × 310,664.32
  4. Step 4: Simplify right side
    514,563.20x = 220,613,569,603.48
  5. Step 5: Solve for x
    x = 220,613,569,603.48/514,563.20
  6. Step 6: Final answer
    x = 428,739.50

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1.5x scale

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.