Home / 458,862,533.78-688,428,111.75-147,963,897.11

Finding the Fourth Proportional to 458,862,533.78, 688,428,111.75 and 147,963,897.11

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Solution

The fourth proportional to 458,862,533.78, 688,428,111.75 and 147,963,897.11 is: 221,989,155.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,862,533.78 : 688,428,111.75 = 147,963,897.11 : x
  2. Step 2: Convert to fraction form
    458,862,533.78/688,428,111.75 = 147,963,897.11/x
  3. Step 3: Cross multiply
    458,862,533.78x = 688,428,111.75 × 147,963,897.11
  4. Step 4: Simplify right side
    458,862,533.78x = 101,862,506,296,329,664
  5. Step 5: Solve for x
    x = 101,862,506,296,329,664/458,862,533.78
  6. Step 6: Final answer
    x = 221,989,155.35

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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.