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Finding the Fourth Proportional to 705,794,586.93, 973,991,154.58 and 388,248,012.55

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Solution

The fourth proportional to 705,794,586.93, 973,991,154.58 and 388,248,012.55 is: 535,779,300.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    705,794,586.93 : 973,991,154.58 = 388,248,012.55 : x
  2. Step 2: Convert to fraction form
    705,794,586.93/973,991,154.58 = 388,248,012.55/x
  3. Step 3: Cross multiply
    705,794,586.93x = 973,991,154.58 × 388,248,012.55
  4. Step 4: Simplify right side
    705,794,586.93x = 378,150,130,006,964,864
  5. Step 5: Solve for x
    x = 378,150,130,006,964,864/705,794,586.93
  6. Step 6: Final answer
    x = 535,779,300.39

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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.