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Finding the Fourth Proportional to 612,045.40, 918,068.10 and 608,546.20

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Solution

The fourth proportional to 612,045.40, 918,068.10 and 608,546.20 is: 912,819.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,045.40 : 918,068.10 = 608,546.20 : x
  2. Step 2: Convert to fraction form
    612,045.40/918,068.10 = 608,546.20/x
  3. Step 3: Cross multiply
    612,045.40x = 918,068.10 × 608,546.20
  4. Step 4: Simplify right side
    612,045.40x = 558,686,853,596.22
  5. Step 5: Solve for x
    x = 558,686,853,596.22/612,045.40
  6. Step 6: Final answer
    x = 912,819.30

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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.