Home / 725,643.60-1,088,465.40-645,464.40

Finding the Fourth Proportional to 725,643.60, 1,088,465.40 and 645,464.40

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Solution

The fourth proportional to 725,643.60, 1,088,465.40 and 645,464.40 is: 968,196.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    725,643.60 : 1,088,465.40 = 645,464.40 : x
  2. Step 2: Convert to fraction form
    725,643.60/1,088,465.40 = 645,464.40/x
  3. Step 3: Cross multiply
    725,643.60x = 1,088,465.40 × 645,464.40
  4. Step 4: Simplify right side
    725,643.60x = 702,565,666,331.76
  5. Step 5: Solve for x
    x = 702,565,666,331.76/725,643.60
  6. Step 6: Final answer
    x = 968,196.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.