Home / 1,029,875.40-1,421,276.76-642,920.04

Finding the Fourth Proportional to 1,029,875.40, 1,421,276.76 and 642,920.04

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Solution

The fourth proportional to 1,029,875.40, 1,421,276.76 and 642,920.04 is: 887,260.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,029,875.40 : 1,421,276.76 = 642,920.04 : x
  2. Step 2: Convert to fraction form
    1,029,875.40/1,421,276.76 = 642,920.04/x
  3. Step 3: Cross multiply
    1,029,875.40x = 1,421,276.76 × 642,920.04
  4. Step 4: Simplify right side
    1,029,875.40x = 913,767,311,390.27
  5. Step 5: Solve for x
    x = 913,767,311,390.27/1,029,875.40
  6. Step 6: Final answer
    x = 887,260.06

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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.