Home / 660,345.08-911,279.57-373,920.98

Finding the Fourth Proportional to 660,345.08, 911,279.57 and 373,920.98

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Solution

The fourth proportional to 660,345.08, 911,279.57 and 373,920.98 is: 516,012.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,345.08 : 911,279.57 = 373,920.98 : x
  2. Step 2: Convert to fraction form
    660,345.08/911,279.57 = 373,920.98/x
  3. Step 3: Cross multiply
    660,345.08x = 911,279.57 × 373,920.98
  4. Step 4: Simplify right side
    660,345.08x = 340,746,543,442.38
  5. Step 5: Solve for x
    x = 340,746,543,442.38/660,345.08
  6. Step 6: Final answer
    x = 516,012.85

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1.5x scale

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.