Home / 686,775,559,886.72-1,030,316,976,271.20-209,282,228,571.68

Finding the Fourth Proportional to 686,775,559,886.72, 1,030,316,976,271.20 and 209,282,228,571.68

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Solution

The fourth proportional to 686,775,559,886.72, 1,030,316,976,271.20 and 209,282,228,571.68 is: 313,970,160,739.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,775,559,886.72 : 1,030,316,976,271.20 = 209,282,228,571.68 : x
  2. Step 2: Convert to fraction form
    686,775,559,886.72/1,030,316,976,271.20 = 209,282,228,571.68/x
  3. Step 3: Cross multiply
    686,775,559,886.72x = 1,030,316,976,271.20 × 209,282,228,571.68
  4. Step 4: Simplify right side
    686,775,559,886.72x = 215,627,032,929,271,453,581,312
  5. Step 5: Solve for x
    x = 215,627,032,929,271,453,581,312/686,775,559,886.72
  6. Step 6: Final answer
    x = 313,970,160,739.03

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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.