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Finding the Fourth Proportional to 549,986.40, 824,979.60 and 425,570.40

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Solution

The fourth proportional to 549,986.40, 824,979.60 and 425,570.40 is: 638,355.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    549,986.40 : 824,979.60 = 425,570.40 : x
  2. Step 2: Convert to fraction form
    549,986.40/824,979.60 = 425,570.40/x
  3. Step 3: Cross multiply
    549,986.40x = 824,979.60 × 425,570.40
  4. Step 4: Simplify right side
    549,986.40x = 351,086,898,363.84
  5. Step 5: Solve for x
    x = 351,086,898,363.84/549,986.40
  6. Step 6: Final answer
    x = 638,355.60

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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.