Home / 624,619.40-861,973.80-338,139.40

Finding the Fourth Proportional to 624,619.40, 861,973.80 and 338,139.40

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Solution

The fourth proportional to 624,619.40, 861,973.80 and 338,139.40 is: 466,631.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,619.40 : 861,973.80 = 338,139.40 : x
  2. Step 2: Convert to fraction form
    624,619.40/861,973.80 = 338,139.40/x
  3. Step 3: Cross multiply
    624,619.40x = 861,973.80 × 338,139.40
  4. Step 4: Simplify right side
    624,619.40x = 291,467,303,547.72
  5. Step 5: Solve for x
    x = 291,467,303,547.72/624,619.40
  6. Step 6: Final answer
    x = 466,631.85

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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.