Home / 1,388,310.02-1,915,854.48-776,455.46

Finding the Fourth Proportional to 1,388,310.02, 1,915,854.48 and 776,455.46

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Solution

The fourth proportional to 1,388,310.02, 1,915,854.48 and 776,455.46 is: 1,071,501.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,388,310.02 : 1,915,854.48 = 776,455.46 : x
  2. Step 2: Convert to fraction form
    1,388,310.02/1,915,854.48 = 776,455.46/x
  3. Step 3: Cross multiply
    1,388,310.02x = 1,915,854.48 × 776,455.46
  4. Step 4: Simplify right side
    1,388,310.02x = 1,487,575,671,561.46
  5. Step 5: Solve for x
    x = 1,487,575,671,561.46/1,388,310.02
  6. Step 6: Final answer
    x = 1,071,501.07

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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.