Home / 712,417.23-983,106.25-390,121.77

Finding the Fourth Proportional to 712,417.23, 983,106.25 and 390,121.77

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Solution

The fourth proportional to 712,417.23, 983,106.25 and 390,121.77 is: 538,351.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,417.23 : 983,106.25 = 390,121.77 : x
  2. Step 2: Convert to fraction form
    712,417.23/983,106.25 = 390,121.77/x
  3. Step 3: Cross multiply
    712,417.23x = 983,106.25 × 390,121.77
  4. Step 4: Simplify right side
    712,417.23x = 383,531,154,522.36
  5. Step 5: Solve for x
    x = 383,531,154,522.36/712,417.23
  6. Step 6: Final answer
    x = 538,351.88

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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.