Home / 1,290,533.90-1,780,957.14-709,782.26

Finding the Fourth Proportional to 1,290,533.90, 1,780,957.14 and 709,782.26

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Solution

The fourth proportional to 1,290,533.90, 1,780,957.14 and 709,782.26 is: 979,510.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,533.90 : 1,780,957.14 = 709,782.26 : x
  2. Step 2: Convert to fraction form
    1,290,533.90/1,780,957.14 = 709,782.26/x
  3. Step 3: Cross multiply
    1,290,533.90x = 1,780,957.14 × 709,782.26
  4. Step 4: Simplify right side
    1,290,533.90x = 1,264,091,783,792.34
  5. Step 5: Solve for x
    x = 1,264,091,783,792.34/1,290,533.90
  6. Step 6: Final answer
    x = 979,510.72

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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.