Home / 640,911,564,878.90-961,163,237,271.60-210,548,754,055.22

Finding the Fourth Proportional to 640,911,564,878.90, 961,163,237,271.60 and 210,548,754,055.22

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Solution

The fourth proportional to 640,911,564,878.90, 961,163,237,271.60 and 210,548,754,055.22 is: 315,756,077,969.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,911,564,878.90 : 961,163,237,271.60 = 210,548,754,055.22 : x
  2. Step 2: Convert to fraction form
    640,911,564,878.90/961,163,237,271.60 = 210,548,754,055.22/x
  3. Step 3: Cross multiply
    640,911,564,878.90x = 961,163,237,271.60 × 210,548,754,055.22
  4. Step 4: Simplify right side
    640,911,564,878.90x = 202,371,722,051,217,182,949,376
  5. Step 5: Solve for x
    x = 202,371,722,051,217,182,949,376/640,911,564,878.90
  6. Step 6: Final answer
    x = 315,756,077,969.13

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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.