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Finding the Fourth Proportional to 692,389.32, 955,458.40 and 386,485.44

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Solution

The fourth proportional to 692,389.32, 955,458.40 and 386,485.44 is: 533,328.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    692,389.32 : 955,458.40 = 386,485.44 : x
  2. Step 2: Convert to fraction form
    692,389.32/955,458.40 = 386,485.44/x
  3. Step 3: Cross multiply
    692,389.32x = 955,458.40 × 386,485.44
  4. Step 4: Simplify right side
    692,389.32x = 369,270,760,125.70
  5. Step 5: Solve for x
    x = 369,270,760,125.70/692,389.32
  6. Step 6: Final answer
    x = 533,328.22

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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.