Home / 1,288,348.34-1,778,084.70-779,054.36

Finding the Fourth Proportional to 1,288,348.34, 1,778,084.70 and 779,054.36

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Solution

The fourth proportional to 1,288,348.34, 1,778,084.70 and 779,054.36 is: 1,075,194.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,288,348.34 : 1,778,084.70 = 779,054.36 : x
  2. Step 2: Convert to fraction form
    1,288,348.34/1,778,084.70 = 779,054.36/x
  3. Step 3: Cross multiply
    1,288,348.34x = 1,778,084.70 × 779,054.36
  4. Step 4: Simplify right side
    1,288,348.34x = 1,385,224,637,984.29
  5. Step 5: Solve for x
    x = 1,385,224,637,984.29/1,288,348.34
  6. Step 6: Final answer
    x = 1,075,194.18

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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.