Home / 630,240.14-870,157.29-484,787.64

Finding the Fourth Proportional to 630,240.14, 870,157.29 and 484,787.64

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Solution

The fourth proportional to 630,240.14, 870,157.29 and 484,787.64 is: 669,334.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,240.14 : 870,157.29 = 484,787.64 : x
  2. Step 2: Convert to fraction form
    630,240.14/870,157.29 = 484,787.64/x
  3. Step 3: Cross multiply
    630,240.14x = 870,157.29 × 484,787.64
  4. Step 4: Simplify right side
    630,240.14x = 421,841,499,047.90
  5. Step 5: Solve for x
    x = 421,841,499,047.90/630,240.14
  6. Step 6: Final answer
    x = 669,334.55

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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.