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Finding the Fourth Proportional to 553,354.40, 830,031.60 and 549,207.20

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Solution

The fourth proportional to 553,354.40, 830,031.60 and 549,207.20 is: 823,810.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,354.40 : 830,031.60 = 549,207.20 : x
  2. Step 2: Convert to fraction form
    553,354.40/830,031.60 = 549,207.20/x
  3. Step 3: Cross multiply
    553,354.40x = 830,031.60 × 549,207.20
  4. Step 4: Simplify right side
    553,354.40x = 455,859,330,947.52
  5. Step 5: Solve for x
    x = 455,859,330,947.52/553,354.40
  6. Step 6: Final answer
    x = 823,810.80

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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.