Home / 620,112,148.40-931,553,905.80-518,075,476.40

Finding the Fourth Proportional to 620,112,148.40, 931,553,905.80 and 518,075,476.40

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Solution

The fourth proportional to 620,112,148.40, 931,553,905.80 and 518,075,476.40 is: 778,270,889.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,112,148.40 : 931,553,905.80 = 518,075,476.40 : x
  2. Step 2: Convert to fraction form
    620,112,148.40/931,553,905.80 = 518,075,476.40/x
  3. Step 3: Cross multiply
    620,112,148.40x = 931,553,905.80 × 518,075,476.40
  4. Step 4: Simplify right side
    620,112,148.40x = 482,615,233,539,615,680
  5. Step 5: Solve for x
    x = 482,615,233,539,615,680/620,112,148.40
  6. Step 6: Final answer
    x = 778,270,889.85

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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.