Home / 858,249,577.55-1,287,566,275.57-312,991,111.55

Finding the Fourth Proportional to 858,249,577.55, 1,287,566,275.57 and 312,991,111.55

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Solution

The fourth proportional to 858,249,577.55, 1,287,566,275.57 and 312,991,111.55 is: 469,556,653.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,249,577.55 : 1,287,566,275.57 = 312,991,111.55 : x
  2. Step 2: Convert to fraction form
    858,249,577.55/1,287,566,275.57 = 312,991,111.55/x
  3. Step 3: Cross multiply
    858,249,577.55x = 1,287,566,275.57 × 312,991,111.55
  4. Step 4: Simplify right side
    858,249,577.55x = 402,996,799,781,024,640
  5. Step 5: Solve for x
    x = 402,996,799,781,024,640/858,249,577.55
  6. Step 6: Final answer
    x = 469,556,653.83

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.