Home / 712,977.77-983,892.34-390,672.29

Finding the Fourth Proportional to 712,977.77, 983,892.34 and 390,672.29

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Solution

The fourth proportional to 712,977.77, 983,892.34 and 390,672.29 is: 539,118.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,977.77 : 983,892.34 = 390,672.29 : x
  2. Step 2: Convert to fraction form
    712,977.77/983,892.34 = 390,672.29/x
  3. Step 3: Cross multiply
    712,977.77x = 983,892.34 × 390,672.29
  4. Step 4: Simplify right side
    712,977.77x = 384,379,473,581.26
  5. Step 5: Solve for x
    x = 384,379,473,581.26/712,977.77
  6. Step 6: Final answer
    x = 539,118.45

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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.