Home / 1,389,891.48-1,918,051.02-778,045.47

Finding the Fourth Proportional to 1,389,891.48, 1,918,051.02 and 778,045.47

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Solution

The fourth proportional to 1,389,891.48, 1,918,051.02 and 778,045.47 is: 1,073,703.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,389,891.48 : 1,918,051.02 = 778,045.47 : x
  2. Step 2: Convert to fraction form
    1,389,891.48/1,918,051.02 = 778,045.47/x
  3. Step 3: Cross multiply
    1,389,891.48x = 1,918,051.02 × 778,045.47
  4. Step 4: Simplify right side
    1,389,891.48x = 1,492,330,907,339.88
  5. Step 5: Solve for x
    x = 1,492,330,907,339.88/1,389,891.48
  6. Step 6: Final answer
    x = 1,073,703.18

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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.