Home / 912,145.80-1,368,218.70-438,587.40

Finding the Fourth Proportional to 912,145.80, 1,368,218.70 and 438,587.40

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Solution

The fourth proportional to 912,145.80, 1,368,218.70 and 438,587.40 is: 657,881.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    912,145.80 : 1,368,218.70 = 438,587.40 : x
  2. Step 2: Convert to fraction form
    912,145.80/1,368,218.70 = 438,587.40/x
  3. Step 3: Cross multiply
    912,145.80x = 1,368,218.70 × 438,587.40
  4. Step 4: Simplify right side
    912,145.80x = 600,083,482,264.38
  5. Step 5: Solve for x
    x = 600,083,482,264.38/912,145.80
  6. Step 6: Final answer
    x = 657,881.10

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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.