Home / 714,688.08-986,266.32-392,390.16

Finding the Fourth Proportional to 714,688.08, 986,266.32 and 392,390.16

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Solution

The fourth proportional to 714,688.08, 986,266.32 and 392,390.16 is: 541,496.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,688.08 : 986,266.32 = 392,390.16 : x
  2. Step 2: Convert to fraction form
    714,688.08/986,266.32 = 392,390.16/x
  3. Step 3: Cross multiply
    714,688.08x = 986,266.32 × 392,390.16
  4. Step 4: Simplify right side
    714,688.08x = 387,001,199,107.41
  5. Step 5: Solve for x
    x = 387,001,199,107.41/714,688.08
  6. Step 6: Final answer
    x = 541,496.65

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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.