Home / 778,752,021.60-1,168,128,032.40-472,390,063.20

Finding the Fourth Proportional to 778,752,021.60, 1,168,128,032.40 and 472,390,063.20

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Solution

The fourth proportional to 778,752,021.60, 1,168,128,032.40 and 472,390,063.20 is: 708,585,094.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,752,021.60 : 1,168,128,032.40 = 472,390,063.20 : x
  2. Step 2: Convert to fraction form
    778,752,021.60/1,168,128,032.40 = 472,390,063.20/x
  3. Step 3: Cross multiply
    778,752,021.60x = 1,168,128,032.40 × 472,390,063.20
  4. Step 4: Simplify right side
    778,752,021.60x = 551,812,075,051,127,680
  5. Step 5: Solve for x
    x = 551,812,075,051,127,680/778,752,021.60
  6. Step 6: Final answer
    x = 708,585,094.80

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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.