Home / 459,966.20-688,637.10-407,478.20

Finding the Fourth Proportional to 459,966.20, 688,637.10 and 407,478.20

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Solution

The fourth proportional to 459,966.20, 688,637.10 and 407,478.20 is: 610,054.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,966.20 : 688,637.10 = 407,478.20 : x
  2. Step 2: Convert to fraction form
    459,966.20/688,637.10 = 407,478.20/x
  3. Step 3: Cross multiply
    459,966.20x = 688,637.10 × 407,478.20
  4. Step 4: Simplify right side
    459,966.20x = 280,604,605,961.22
  5. Step 5: Solve for x
    x = 280,604,605,961.22/459,966.20
  6. Step 6: Final answer
    x = 610,054.84

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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.