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Finding the Fourth Proportional to 612,550, 845,319.70 and 340,612.06

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Solution

The fourth proportional to 612,550, 845,319.70 and 340,612.06 is: 470,045.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,550 : 845,319.70 = 340,612.06 : x
  2. Step 2: Convert to fraction form
    612,550/845,319.70 = 340,612.06/x
  3. Step 3: Cross multiply
    612,550x = 845,319.70 × 340,612.06
  4. Step 4: Simplify right side
    612,550x = 287,926,084,375.58
  5. Step 5: Solve for x
    x = 287,926,084,375.58/612,550
  6. Step 6: Final answer
    x = 470,045.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.