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Finding the Fourth Proportional to 612,070.80, 918,106.20 and 570,080.40

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Solution

The fourth proportional to 612,070.80, 918,106.20 and 570,080.40 is: 855,120.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,070.80 : 918,106.20 = 570,080.40 : x
  2. Step 2: Convert to fraction form
    612,070.80/918,106.20 = 570,080.40/x
  3. Step 3: Cross multiply
    612,070.80x = 918,106.20 × 570,080.40
  4. Step 4: Simplify right side
    612,070.80x = 523,394,349,738.48
  5. Step 5: Solve for x
    x = 523,394,349,738.48/612,070.80
  6. Step 6: Final answer
    x = 855,120.60

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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.