Home / 712,596.02-983,382.63-390,317.65

Finding the Fourth Proportional to 712,596.02, 983,382.63 and 390,317.65

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Solution

The fourth proportional to 712,596.02, 983,382.63 and 390,317.65 is: 538,638.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,596.02 : 983,382.63 = 390,317.65 : x
  2. Step 2: Convert to fraction form
    712,596.02/983,382.63 = 390,317.65/x
  3. Step 3: Cross multiply
    712,596.02x = 983,382.63 × 390,317.65
  4. Step 4: Simplify right side
    712,596.02x = 383,831,597,192.42
  5. Step 5: Solve for x
    x = 383,831,597,192.42/712,596.02
  6. Step 6: Final answer
    x = 538,638.42

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Double scale
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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.