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Finding the Fourth Proportional to 549,803.20, 770,830.40 and 549,803.20

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Solution

The fourth proportional to 549,803.20, 770,830.40 and 549,803.20 is: 770,830.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    549,803.20 : 770,830.40 = 549,803.20 : x
  2. Step 2: Convert to fraction form
    549,803.20/770,830.40 = 549,803.20/x
  3. Step 3: Cross multiply
    549,803.20x = 770,830.40 × 549,803.20
  4. Step 4: Simplify right side
    549,803.20x = 423,805,020,577.28
  5. Step 5: Solve for x
    x = 423,805,020,577.28/549,803.20
  6. Step 6: Final answer
    x = 770,830.40

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.