Home / 1,430,085.90-1,973,532.78-776,724.69

Finding the Fourth Proportional to 1,430,085.90, 1,973,532.78 and 776,724.69

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Solution

The fourth proportional to 1,430,085.90, 1,973,532.78 and 776,724.69 is: 1,071,887.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,430,085.90 : 1,973,532.78 = 776,724.69 : x
  2. Step 2: Convert to fraction form
    1,430,085.90/1,973,532.78 = 776,724.69/x
  3. Step 3: Cross multiply
    1,430,085.90x = 1,973,532.78 × 776,724.69
  4. Step 4: Simplify right side
    1,430,085.90x = 1,532,891,636,750.34
  5. Step 5: Solve for x
    x = 1,532,891,636,750.34/1,430,085.90
  6. Step 6: Final answer
    x = 1,071,887.81

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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.