Home / 990,011.76-1,366,216.80-537,302.76

Finding the Fourth Proportional to 990,011.76, 1,366,216.80 and 537,302.76

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Solution

The fourth proportional to 990,011.76, 1,366,216.80 and 537,302.76 is: 741,478.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,011.76 : 1,366,216.80 = 537,302.76 : x
  2. Step 2: Convert to fraction form
    990,011.76/1,366,216.80 = 537,302.76/x
  3. Step 3: Cross multiply
    990,011.76x = 1,366,216.80 × 537,302.76
  4. Step 4: Simplify right side
    990,011.76x = 734,072,057,398.37
  5. Step 5: Solve for x
    x = 734,072,057,398.37/990,011.76
  6. Step 6: Final answer
    x = 741,478.12

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Half scale
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Double scale
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Similar ratio
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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.