Home / 1,186,345.50-1,779,150.24-428,088.30

Finding the Fourth Proportional to 1,186,345.50, 1,779,150.24 and 428,088.30

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Solution

The fourth proportional to 1,186,345.50, 1,779,150.24 and 428,088.30 is: 641,999.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,186,345.50 : 1,779,150.24 = 428,088.30 : x
  2. Step 2: Convert to fraction form
    1,186,345.50/1,779,150.24 = 428,088.30/x
  3. Step 3: Cross multiply
    1,186,345.50x = 1,779,150.24 × 428,088.30
  4. Step 4: Simplify right side
    1,186,345.50x = 761,633,401,686.19
  5. Step 5: Solve for x
    x = 761,633,401,686.19/1,186,345.50
  6. Step 6: Final answer
    x = 641,999.65

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Double scale
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1.5x scale

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.