Home / 686,047,121.64-946,742,966.64-372,782,291.40

Finding the Fourth Proportional to 686,047,121.64, 946,742,966.64 and 372,782,291.40

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Solution

The fourth proportional to 686,047,121.64, 946,742,966.64 and 372,782,291.40 is: 514,438,442.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,047,121.64 : 946,742,966.64 = 372,782,291.40 : x
  2. Step 2: Convert to fraction form
    686,047,121.64/946,742,966.64 = 372,782,291.40/x
  3. Step 3: Cross multiply
    686,047,121.64x = 946,742,966.64 × 372,782,291.40
  4. Step 4: Simplify right side
    686,047,121.64x = 352,929,012,470,892,928
  5. Step 5: Solve for x
    x = 352,929,012,470,892,928/686,047,121.64
  6. Step 6: Final answer
    x = 514,438,442.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.