Home / 1,097,666.80-1,646,500.20-387,689.20

Finding the Fourth Proportional to 1,097,666.80, 1,646,500.20 and 387,689.20

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Solution

The fourth proportional to 1,097,666.80, 1,646,500.20 and 387,689.20 is: 581,533.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,097,666.80 : 1,646,500.20 = 387,689.20 : x
  2. Step 2: Convert to fraction form
    1,097,666.80/1,646,500.20 = 387,689.20/x
  3. Step 3: Cross multiply
    1,097,666.80x = 1,646,500.20 × 387,689.20
  4. Step 4: Simplify right side
    1,097,666.80x = 638,330,345,337.84
  5. Step 5: Solve for x
    x = 638,330,345,337.84/1,097,666.80
  6. Step 6: Final answer
    x = 581,533.80

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.