Home / 1,138,031.50-1,570,465.12-621,774.30

Finding the Fourth Proportional to 1,138,031.50, 1,570,465.12 and 621,774.30

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Solution

The fourth proportional to 1,138,031.50, 1,570,465.12 and 621,774.30 is: 858,038.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,138,031.50 : 1,570,465.12 = 621,774.30 : x
  2. Step 2: Convert to fraction form
    1,138,031.50/1,570,465.12 = 621,774.30/x
  3. Step 3: Cross multiply
    1,138,031.50x = 1,570,465.12 × 621,774.30
  4. Step 4: Simplify right side
    1,138,031.50x = 976,474,850,662.42
  5. Step 5: Solve for x
    x = 976,474,850,662.42/1,138,031.50
  6. Step 6: Final answer
    x = 858,038.51

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Double scale
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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.