Home / 712,320.64-983,002.24-390,030.64

Finding the Fourth Proportional to 712,320.64, 983,002.24 and 390,030.64

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Solution

The fourth proportional to 712,320.64, 983,002.24 and 390,030.64 is: 538,242.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,320.64 : 983,002.24 = 390,030.64 : x
  2. Step 2: Convert to fraction form
    712,320.64/983,002.24 = 390,030.64/x
  3. Step 3: Cross multiply
    712,320.64x = 983,002.24 × 390,030.64
  4. Step 4: Simplify right side
    712,320.64x = 383,400,992,788.63
  5. Step 5: Solve for x
    x = 383,400,992,788.63/712,320.64
  6. Step 6: Final answer
    x = 538,242.15

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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.