Home / 1,077,965.40-1,618,279.30-678,605.40

Finding the Fourth Proportional to 1,077,965.40, 1,618,279.30 and 678,605.40

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Solution

The fourth proportional to 1,077,965.40, 1,618,279.30 and 678,605.40 is: 1,018,746.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,077,965.40 : 1,618,279.30 = 678,605.40 : x
  2. Step 2: Convert to fraction form
    1,077,965.40/1,618,279.30 = 678,605.40/x
  3. Step 3: Cross multiply
    1,077,965.40x = 1,618,279.30 × 678,605.40
  4. Step 4: Simplify right side
    1,077,965.40x = 1,098,173,071,688.22
  5. Step 5: Solve for x
    x = 1,098,173,071,688.22/1,077,965.40
  6. Step 6: Final answer
    x = 1,018,746.12

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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.