Home / 1,087,118.12-1,499,981.28-657,389.36

Finding the Fourth Proportional to 1,087,118.12, 1,499,981.28 and 657,389.36

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Solution

The fourth proportional to 1,087,118.12, 1,499,981.28 and 657,389.36 is: 907,051.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,087,118.12 : 1,499,981.28 = 657,389.36 : x
  2. Step 2: Convert to fraction form
    1,087,118.12/1,499,981.28 = 657,389.36/x
  3. Step 3: Cross multiply
    1,087,118.12x = 1,499,981.28 × 657,389.36
  4. Step 4: Simplify right side
    1,087,118.12x = 986,071,733,671.18
  5. Step 5: Solve for x
    x = 986,071,733,671.18/1,087,118.12
  6. Step 6: Final answer
    x = 907,051.14

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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.