Home / 712,699.58-983,525.61-390,421.23

Finding the Fourth Proportional to 712,699.58, 983,525.61 and 390,421.23

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Solution

The fourth proportional to 712,699.58, 983,525.61 and 390,421.23 is: 538,781.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,699.58 : 983,525.61 = 390,421.23 : x
  2. Step 2: Convert to fraction form
    712,699.58/983,525.61 = 390,421.23/x
  3. Step 3: Cross multiply
    712,699.58x = 983,525.61 × 390,421.23
  4. Step 4: Simplify right side
    712,699.58x = 383,989,278,392.70
  5. Step 5: Solve for x
    x = 383,989,278,392.70/712,699.58
  6. Step 6: Final answer
    x = 538,781.41

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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.