Home / 712,941.37-983,881.96-390,671.93

Finding the Fourth Proportional to 712,941.37, 983,881.96 and 390,671.93

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Solution

The fourth proportional to 712,941.37, 983,881.96 and 390,671.93 is: 539,139.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,941.37 : 983,881.96 = 390,671.93 : x
  2. Step 2: Convert to fraction form
    712,941.37/983,881.96 = 390,671.93/x
  3. Step 3: Cross multiply
    712,941.37x = 983,881.96 × 390,671.93
  4. Step 4: Simplify right side
    712,941.37x = 384,375,065,688.41
  5. Step 5: Solve for x
    x = 384,375,065,688.41/712,941.37
  6. Step 6: Final answer
    x = 539,139.80

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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.