Home / 12,939,614,419.20-19,409,421,628.80-5,190,388,742.40

Finding the Fourth Proportional to 12,939,614,419.20, 19,409,421,628.80 and 5,190,388,742.40

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Solution

The fourth proportional to 12,939,614,419.20, 19,409,421,628.80 and 5,190,388,742.40 is: 7,785,583,113.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,939,614,419.20 : 19,409,421,628.80 = 5,190,388,742.40 : x
  2. Step 2: Convert to fraction form
    12,939,614,419.20/19,409,421,628.80 = 5,190,388,742.40/x
  3. Step 3: Cross multiply
    12,939,614,419.20x = 19,409,421,628.80 × 5,190,388,742.40
  4. Step 4: Simplify right side
    12,939,614,419.20x = 100,742,443,518,618,583,040
  5. Step 5: Solve for x
    x = 100,742,443,518,618,583,040/12,939,614,419.20
  6. Step 6: Final answer
    x = 7,785,583,113.60

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1.5x scale

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.