Home / 1,109,781.40-1,666,421.70-637,389.40

Finding the Fourth Proportional to 1,109,781.40, 1,666,421.70 and 637,389.40

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Solution

The fourth proportional to 1,109,781.40, 1,666,421.70 and 637,389.40 is: 957,088.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,109,781.40 : 1,666,421.70 = 637,389.40 : x
  2. Step 2: Convert to fraction form
    1,109,781.40/1,666,421.70 = 637,389.40/x
  3. Step 3: Cross multiply
    1,109,781.40x = 1,666,421.70 × 637,389.40
  4. Step 4: Simplify right side
    1,109,781.40x = 1,062,159,527,509.98
  5. Step 5: Solve for x
    x = 1,062,159,527,509.98/1,109,781.40
  6. Step 6: Final answer
    x = 957,088.96

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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.