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Finding the Fourth Proportional to 903,647.65, 1,355,421.59 and 660,737.65

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Solution

The fourth proportional to 903,647.65, 1,355,421.59 and 660,737.65 is: 991,070.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    903,647.65 : 1,355,421.59 = 660,737.65 : x
  2. Step 2: Convert to fraction form
    903,647.65/1,355,421.59 = 660,737.65/x
  3. Step 3: Cross multiply
    903,647.65x = 1,355,421.59 × 660,737.65
  4. Step 4: Simplify right side
    903,647.65x = 895,578,076,135.86
  5. Step 5: Solve for x
    x = 895,578,076,135.86/903,647.65
  6. Step 6: Final answer
    x = 991,070.00

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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.