Home / 712,735.13-983,598.95-390,445.13

Finding the Fourth Proportional to 712,735.13, 983,598.95 and 390,445.13

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Solution

The fourth proportional to 712,735.13, 983,598.95 and 390,445.13 is: 538,827.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,735.13 : 983,598.95 = 390,445.13 : x
  2. Step 2: Convert to fraction form
    712,735.13/983,598.95 = 390,445.13/x
  3. Step 3: Cross multiply
    712,735.13x = 983,598.95 × 390,445.13
  4. Step 4: Simplify right side
    712,735.13x = 384,041,413,030.39
  5. Step 5: Solve for x
    x = 384,041,413,030.39/712,735.13
  6. Step 6: Final answer
    x = 538,827.68

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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.