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Finding the Fourth Proportional to 549,638.60, 824,457.90 and 528,643.40

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Solution

The fourth proportional to 549,638.60, 824,457.90 and 528,643.40 is: 792,965.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    549,638.60 : 824,457.90 = 528,643.40 : x
  2. Step 2: Convert to fraction form
    549,638.60/824,457.90 = 528,643.40/x
  3. Step 3: Cross multiply
    549,638.60x = 824,457.90 × 528,643.40
  4. Step 4: Simplify right side
    549,638.60x = 435,844,227,412.86
  5. Step 5: Solve for x
    x = 435,844,227,412.86/549,638.60
  6. Step 6: Final answer
    x = 792,965.10

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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.