Home / 1,008,681.04-1,391,438.76-645,714.40

Finding the Fourth Proportional to 1,008,681.04, 1,391,438.76 and 645,714.40

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Solution

The fourth proportional to 1,008,681.04, 1,391,438.76 and 645,714.40 is: 890,739.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,008,681.04 : 1,391,438.76 = 645,714.40 : x
  2. Step 2: Convert to fraction form
    1,008,681.04/1,391,438.76 = 645,714.40/x
  3. Step 3: Cross multiply
    1,008,681.04x = 1,391,438.76 × 645,714.40
  4. Step 4: Simplify right side
    1,008,681.04x = 898,472,044,050.14
  5. Step 5: Solve for x
    x = 898,472,044,050.14/1,008,681.04
  6. Step 6: Final answer
    x = 890,739.50

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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.