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Finding the Fourth Proportional to 553,407.80, 830,111.70 and 549,908.60

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Solution

The fourth proportional to 553,407.80, 830,111.70 and 549,908.60 is: 824,862.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,407.80 : 830,111.70 = 549,908.60 : x
  2. Step 2: Convert to fraction form
    553,407.80/830,111.70 = 549,908.60/x
  3. Step 3: Cross multiply
    553,407.80x = 830,111.70 × 549,908.60
  4. Step 4: Simplify right side
    553,407.80x = 456,485,562,790.62
  5. Step 5: Solve for x
    x = 456,485,562,790.62/553,407.80
  6. Step 6: Final answer
    x = 824,862.90

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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.