Home / 712,567.44-983,354.28-390,271.76

Finding the Fourth Proportional to 712,567.44, 983,354.28 and 390,271.76

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Solution

The fourth proportional to 712,567.44, 983,354.28 and 390,271.76 is: 538,581.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,567.44 : 983,354.28 = 390,271.76 : x
  2. Step 2: Convert to fraction form
    712,567.44/983,354.28 = 390,271.76/x
  3. Step 3: Cross multiply
    712,567.44x = 983,354.28 × 390,271.76
  4. Step 4: Simplify right side
    712,567.44x = 383,775,405,559.13
  5. Step 5: Solve for x
    x = 383,775,405,559.13/712,567.44
  6. Step 6: Final answer
    x = 538,581.17

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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.