Home / 926,429.10-1,389,643.65-393,816.30

Finding the Fourth Proportional to 926,429.10, 1,389,643.65 and 393,816.30

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Solution

The fourth proportional to 926,429.10, 1,389,643.65 and 393,816.30 is: 590,724.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    926,429.10 : 1,389,643.65 = 393,816.30 : x
  2. Step 2: Convert to fraction form
    926,429.10/1,389,643.65 = 393,816.30/x
  3. Step 3: Cross multiply
    926,429.10x = 1,389,643.65 × 393,816.30
  4. Step 4: Simplify right side
    926,429.10x = 547,264,320,561.50
  5. Step 5: Solve for x
    x = 547,264,320,561.50/926,429.10
  6. Step 6: Final answer
    x = 590,724.45

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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.