Home / 1,390,734.36-1,919,054.70-778,802.04

Finding the Fourth Proportional to 1,390,734.36, 1,919,054.70 and 778,802.04

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Solution

The fourth proportional to 1,390,734.36, 1,919,054.70 and 778,802.04 is: 1,074,657.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,390,734.36 : 1,919,054.70 = 778,802.04 : x
  2. Step 2: Convert to fraction form
    1,390,734.36/1,919,054.70 = 778,802.04/x
  3. Step 3: Cross multiply
    1,390,734.36x = 1,919,054.70 × 778,802.04
  4. Step 4: Simplify right side
    1,390,734.36x = 1,494,563,715,231.59
  5. Step 5: Solve for x
    x = 1,494,563,715,231.59/1,390,734.36
  6. Step 6: Final answer
    x = 1,074,657.93

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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.