Home / 1,234,838.40-1,851,220.80-643,862.40

Finding the Fourth Proportional to 1,234,838.40, 1,851,220.80 and 643,862.40

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Solution

The fourth proportional to 1,234,838.40, 1,851,220.80 and 643,862.40 is: 965,253.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,234,838.40 : 1,851,220.80 = 643,862.40 : x
  2. Step 2: Convert to fraction form
    1,234,838.40/1,851,220.80 = 643,862.40/x
  3. Step 3: Cross multiply
    1,234,838.40x = 1,851,220.80 × 643,862.40
  4. Step 4: Simplify right side
    1,234,838.40x = 1,191,931,467,217.92
  5. Step 5: Solve for x
    x = 1,191,931,467,217.92/1,234,838.40
  6. Step 6: Final answer
    x = 965,253.00

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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.