Home / 1,210,931.48-1,670,999.08-720,875

Finding the Fourth Proportional to 1,210,931.48, 1,670,999.08 and 720,875

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Solution

The fourth proportional to 1,210,931.48, 1,670,999.08 and 720,875 is: 994,756.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,210,931.48 : 1,670,999.08 = 720,875 : x
  2. Step 2: Convert to fraction form
    1,210,931.48/1,670,999.08 = 720,875/x
  3. Step 3: Cross multiply
    1,210,931.48x = 1,670,999.08 × 720,875
  4. Step 4: Simplify right side
    1,210,931.48x = 1,204,581,461,795
  5. Step 5: Solve for x
    x = 1,204,581,461,795/1,210,931.48
  6. Step 6: Final answer
    x = 994,756.09

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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.