Home / 926,556,678.36-1,278,643,270.32-503,166,638.70

Finding the Fourth Proportional to 926,556,678.36, 1,278,643,270.32 and 503,166,638.70

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Solution

The fourth proportional to 926,556,678.36, 1,278,643,270.32 and 503,166,638.70 is: 694,367,275.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    926,556,678.36 : 1,278,643,270.32 = 503,166,638.70 : x
  2. Step 2: Convert to fraction form
    926,556,678.36/1,278,643,270.32 = 503,166,638.70/x
  3. Step 3: Cross multiply
    926,556,678.36x = 1,278,643,270.32 × 503,166,638.70
  4. Step 4: Simplify right side
    926,556,678.36x = 643,370,636,423,289,856
  5. Step 5: Solve for x
    x = 643,370,636,423,289,856/926,556,678.36
  6. Step 6: Final answer
    x = 694,367,275.58

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1.5x scale

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.