Home / 661,621.38-912,230.55-559,464.18

Finding the Fourth Proportional to 661,621.38, 912,230.55 and 559,464.18

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Solution

The fourth proportional to 661,621.38, 912,230.55 and 559,464.18 is: 771,378.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,621.38 : 912,230.55 = 559,464.18 : x
  2. Step 2: Convert to fraction form
    661,621.38/912,230.55 = 559,464.18/x
  3. Step 3: Cross multiply
    661,621.38x = 912,230.55 × 559,464.18
  4. Step 4: Simplify right side
    661,621.38x = 510,360,316,626.70
  5. Step 5: Solve for x
    x = 510,360,316,626.70/661,621.38
  6. Step 6: Final answer
    x = 771,378.21

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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.