Home / 1,178,607.51-1,768,041.68-420,625.71

Finding the Fourth Proportional to 1,178,607.51, 1,768,041.68 and 420,625.71

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Solution

The fourth proportional to 1,178,607.51, 1,768,041.68 and 420,625.71 is: 630,985.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,178,607.51 : 1,768,041.68 = 420,625.71 : x
  2. Step 2: Convert to fraction form
    1,178,607.51/1,768,041.68 = 420,625.71/x
  3. Step 3: Cross multiply
    1,178,607.51x = 1,768,041.68 × 420,625.71
  4. Step 4: Simplify right side
    1,178,607.51x = 743,683,784,856.46
  5. Step 5: Solve for x
    x = 743,683,784,856.46/1,178,607.51
  6. Step 6: Final answer
    x = 630,985.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.