Home / 712,528.93-983,263.44-390,241.66

Finding the Fourth Proportional to 712,528.93, 983,263.44 and 390,241.66

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Solution

The fourth proportional to 712,528.93, 983,263.44 and 390,241.66 is: 538,518.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,528.93 : 983,263.44 = 390,241.66 : x
  2. Step 2: Convert to fraction form
    712,528.93/983,263.44 = 390,241.66/x
  3. Step 3: Cross multiply
    712,528.93x = 983,263.44 × 390,241.66
  4. Step 4: Simplify right side
    712,528.93x = 383,710,357,042.91
  5. Step 5: Solve for x
    x = 383,710,357,042.91/712,528.93
  6. Step 6: Final answer
    x = 538,518.99

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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.