Home / 811,210.31-1,119,619.98-521,184.43

Finding the Fourth Proportional to 811,210.31, 1,119,619.98 and 521,184.43

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Solution

The fourth proportional to 811,210.31, 1,119,619.98 and 521,184.43 is: 719,330.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,210.31 : 1,119,619.98 = 521,184.43 : x
  2. Step 2: Convert to fraction form
    811,210.31/1,119,619.98 = 521,184.43/x
  3. Step 3: Cross multiply
    811,210.31x = 1,119,619.98 × 521,184.43
  4. Step 4: Simplify right side
    811,210.31x = 583,528,495,494.81
  5. Step 5: Solve for x
    x = 583,528,495,494.81/811,210.31
  6. Step 6: Final answer
    x = 719,330.72

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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.