Home / 648,529.01-895,208.87-390,417.96

Finding the Fourth Proportional to 648,529.01, 895,208.87 and 390,417.96

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Solution

The fourth proportional to 648,529.01, 895,208.87 and 390,417.96 is: 538,920.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,529.01 : 895,208.87 = 390,417.96 : x
  2. Step 2: Convert to fraction form
    648,529.01/895,208.87 = 390,417.96/x
  3. Step 3: Cross multiply
    648,529.01x = 895,208.87 × 390,417.96
  4. Step 4: Simplify right side
    648,529.01x = 349,505,621,951.90
  5. Step 5: Solve for x
    x = 349,505,621,951.90/648,529.01
  6. Step 6: Final answer
    x = 538,920.57

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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.