Home / 563,241.60-777,275.13-305,121.19

Finding the Fourth Proportional to 563,241.60, 777,275.13 and 305,121.19

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Solution

The fourth proportional to 563,241.60, 777,275.13 and 305,121.19 is: 421,068.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    563,241.60 : 777,275.13 = 305,121.19 : x
  2. Step 2: Convert to fraction form
    563,241.60/777,275.13 = 305,121.19/x
  3. Step 3: Cross multiply
    563,241.60x = 777,275.13 × 305,121.19
  4. Step 4: Simplify right side
    563,241.60x = 237,163,112,623.01
  5. Step 5: Solve for x
    x = 237,163,112,623.01/563,241.60
  6. Step 6: Final answer
    x = 421,068.18

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Double scale
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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.