Home / 931,854.08-1,282,785.20-689,680.28

Finding the Fourth Proportional to 931,854.08, 1,282,785.20 and 689,680.28

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Solution

The fourth proportional to 931,854.08, 1,282,785.20 and 689,680.28 is: 949,410.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    931,854.08 : 1,282,785.20 = 689,680.28 : x
  2. Step 2: Convert to fraction form
    931,854.08/1,282,785.20 = 689,680.28/x
  3. Step 3: Cross multiply
    931,854.08x = 1,282,785.20 × 689,680.28
  4. Step 4: Simplify right side
    931,854.08x = 884,711,655,915.86
  5. Step 5: Solve for x
    x = 884,711,655,915.86/931,854.08
  6. Step 6: Final answer
    x = 949,410.08

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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.