Home / 485,302.48-724,157.46-434,868.64

Finding the Fourth Proportional to 485,302.48, 724,157.46 and 434,868.64

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Solution

The fourth proportional to 485,302.48, 724,157.46 and 434,868.64 is: 648,901.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,302.48 : 724,157.46 = 434,868.64 : x
  2. Step 2: Convert to fraction form
    485,302.48/724,157.46 = 434,868.64/x
  3. Step 3: Cross multiply
    485,302.48x = 724,157.46 × 434,868.64
  4. Step 4: Simplify right side
    485,302.48x = 314,913,369,776.05
  5. Step 5: Solve for x
    x = 314,913,369,776.05/485,302.48
  6. Step 6: Final answer
    x = 648,901.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.