Home / 647,353,970.40-971,030,955.60-370,721,215.20

Finding the Fourth Proportional to 647,353,970.40, 971,030,955.60 and 370,721,215.20

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Solution

The fourth proportional to 647,353,970.40, 971,030,955.60 and 370,721,215.20 is: 556,081,822.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,353,970.40 : 971,030,955.60 = 370,721,215.20 : x
  2. Step 2: Convert to fraction form
    647,353,970.40/971,030,955.60 = 370,721,215.20/x
  3. Step 3: Cross multiply
    647,353,970.40x = 971,030,955.60 × 370,721,215.20
  4. Step 4: Simplify right side
    647,353,970.40x = 359,981,775,856,849,216
  5. Step 5: Solve for x
    x = 359,981,775,856,849,216/647,353,970.40
  6. Step 6: Final answer
    x = 556,081,822.80

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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.