Home / 712,701.64-983,493.06-390,412.84

Finding the Fourth Proportional to 712,701.64, 983,493.06 and 390,412.84

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Solution

The fourth proportional to 712,701.64, 983,493.06 and 390,412.84 is: 538,750.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,701.64 : 983,493.06 = 390,412.84 : x
  2. Step 2: Convert to fraction form
    712,701.64/983,493.06 = 390,412.84/x
  3. Step 3: Cross multiply
    712,701.64x = 983,493.06 × 390,412.84
  4. Step 4: Simplify right side
    712,701.64x = 383,968,318,674.89
  5. Step 5: Solve for x
    x = 383,968,318,674.89/712,701.64
  6. Step 6: Final answer
    x = 538,750.44

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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.