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Finding the Fourth Proportional to 569,554.64, 785,976.82 and 311,432.45

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Solution

The fourth proportional to 569,554.64, 785,976.82 and 311,432.45 is: 429,772.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    569,554.64 : 785,976.82 = 311,432.45 : x
  2. Step 2: Convert to fraction form
    569,554.64/785,976.82 = 311,432.45/x
  3. Step 3: Cross multiply
    569,554.64x = 785,976.82 × 311,432.45
  4. Step 4: Simplify right side
    569,554.64x = 244,778,681,987.34
  5. Step 5: Solve for x
    x = 244,778,681,987.34/569,554.64
  6. Step 6: Final answer
    x = 429,772.08

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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.