Home / 912,935.40-1,369,403.10-239,015.40

Finding the Fourth Proportional to 912,935.40, 1,369,403.10 and 239,015.40

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Solution

The fourth proportional to 912,935.40, 1,369,403.10 and 239,015.40 is: 358,523.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    912,935.40 : 1,369,403.10 = 239,015.40 : x
  2. Step 2: Convert to fraction form
    912,935.40/1,369,403.10 = 239,015.40/x
  3. Step 3: Cross multiply
    912,935.40x = 1,369,403.10 × 239,015.40
  4. Step 4: Simplify right side
    912,935.40x = 327,308,429,707.74
  5. Step 5: Solve for x
    x = 327,308,429,707.74/912,935.40
  6. Step 6: Final answer
    x = 358,523.10

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