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Finding the Fourth Proportional to 612,574.72, 845,428.80 and 370,866.40

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Solution

The fourth proportional to 612,574.72, 845,428.80 and 370,866.40 is: 511,841.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,574.72 : 845,428.80 = 370,866.40 : x
  2. Step 2: Convert to fraction form
    612,574.72/845,428.80 = 370,866.40/x
  3. Step 3: Cross multiply
    612,574.72x = 845,428.80 × 370,866.40
  4. Step 4: Simplify right side
    612,574.72x = 313,541,135,512.32
  5. Step 5: Solve for x
    x = 313,541,135,512.32/612,574.72
  6. Step 6: Final answer
    x = 511,841.45

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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.