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Finding the Fourth Proportional to 710,346.93, 980,262.72 and 388,058.46

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Solution

The fourth proportional to 710,346.93, 980,262.72 and 388,058.46 is: 535,511.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,346.93 : 980,262.72 = 388,058.46 : x
  2. Step 2: Convert to fraction form
    710,346.93/980,262.72 = 388,058.46/x
  3. Step 3: Cross multiply
    710,346.93x = 980,262.72 × 388,058.46
  4. Step 4: Simplify right side
    710,346.93x = 380,399,241,518.61
  5. Step 5: Solve for x
    x = 380,399,241,518.61/710,346.93
  6. Step 6: Final answer
    x = 535,511.91

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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.